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Capillary electrophoretic separations of enantiomers using cyclodextrin-containing background electrolytes
1Department of Chemistry, Texas A&M University, College Station 77843-3255, USA. vigh@chemvx.tamu.edu
Electrophoresis
|February 10, 1998
Summary
This review highlights advancements in enantiomer separation using cyclodextrins (CDs). The study notes increased use of charged CDs and improved quantitation limits for minor enantiomers, enhancing chiral analysis.
Area of Science:
- Analytical Chemistry
- Separation Science
- Chiral Chemistry
Background:
- Cyclodextrins (CDs) are widely used as chiral selectors in enantiomer separation.
- The year 1996 saw a significant body of research focused on optimizing these separation techniques.
Purpose of the Study:
- To review primary literature from 1996 concerning enantiomer separation using cyclodextrins.
- To identify trends in the types of cyclodextrins employed and the analytical methodologies developed.
Main Methods:
- Literature review of papers published in 1996 on cyclodextrin-mediated enantiomer separations.
- Analysis of trends in the use of neutral vs. charged cyclodextrins.
- Examination of reported binding constants and their correlation with analyte properties.
Main Results:
- Increased utilization of charged cyclodextrins (both weak and strong electrolytes) as resolving agents.
- Advancements in minor enantiomer determination, achieving reliable quantitation below 0.1%.
- Continued development in using simultaneous neutral and charged cyclodextrins for enhanced selectivity and resolution.
Conclusions:
- Charged cyclodextrins represent a growing trend in chiral separations.
- Improved analytical sensitivity allows for more accurate quantification of trace enantiomers.
- Synergistic use of different cyclodextrin types offers enhanced separation performance.